I have been using this for over a week. A record with me and a sunscreen. It is very light and you don't feel it on your skin. The 15% Tio2 will cause minor dryness if you have any dry areas, though. I have noticed some minor irritation, but nothing that would make me send the product back. I am not convinced yet that this is the sunscreen for me, but it definitely could be. I also just received Obagi SPF 32. It has about 18% ZincO and no other sunscreen agents. It is not a liquidy spray like the Cosmedix. It is more of a lotion. I will report more when I try it on my face. I did a test on my hand today. It went on white and shiny. After about 5 minutes, though, it looked matte and the whiteness went away.

-Kevin